riot/dom-bindings

/**
 * Create a flat object having as keys a list of methods that if dispatched will propagate
 * on the whole collection
 * @param   {Array} collection - collection to iterate
 * @param   {Array<string>} methods - methods to execute on each item of the collection
 * @param   {*} context - context returned by the new methods created
 * @returns {Object} a new object to simplify the the nested methods dispatching
 */
export default function flattenCollectionMethods(collection, methods, context) {
  return methods.reduce((acc, method) => {
    return {
      ...acc,
      [method]: (scope) => {
        return collection.map((item) => item[method](scope)) && context
      },
    }
  }, {})
}